//package com.itheima.service;
//
//import com.alibaba.dubbo.config.annotation.Reference;
//import com.itheima.pojo.Permission;
//import com.itheima.pojo.Role;
//import com.itheima.pojo.User;
//import org.springframework.beans.factory.annotation.Autowired;
//import org.springframework.security.core.GrantedAuthority;
//import org.springframework.security.core.authority.SimpleGrantedAuthority;
//import org.springframework.security.core.userdetails.UserDetails;
//import org.springframework.security.core.userdetails.UserDetailsService;
//import org.springframework.security.core.userdetails.UsernameNotFoundException;
//import org.springframework.stereotype.Component;
//
//import java.util.ArrayList;
//import java.util.List;
//import java.util.Set;
//
//@Component
//public class SpringSecurityUserService implements UserDetailsService {
//    @Reference
//    private UserService userService;
//
//    //根据用户名查询数据库获得用户信息
//    @Override
//    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
//        User user = userService.findByUsername(username);
//        if(user == null){
//            return null;
//        }
//        List<GrantedAuthority> list =new ArrayList<>();
//        //动态未当前角色授权
//        Set<Role> roles = user.getRoles();
//        for(Role role : roles){
//            //遍历角色集合，为用户授予角色
//            list.add(new SimpleGrantedAuthority(role.getKeyword()));
//            Set<Permission> permissions =role.getPermissions();
//
//            for(Permission permission : permissions){
//                //遍历权限集合，为用户授权
//                list.add(new SimpleGrantedAuthority(permission.getKeyword()));
//            }
//        }
//        org.springframework.security.core.userdetails.User securityUser = new org.springframework.security.core.userdetails.User(username,user.getUser_password(),list);
//        return securityUser;
//    }
//}
